可再生能源2025，Vol.43Issue(12)：1598-1608,11.
基于CFD的喷射器结构优化及喷射式热泵系统性能研究
CFD-based optimization of ejector structure and performance study of ejector heat pump system
摘要
Abstract
In order to investigate the influence of structural parameters on the flow characteristics in the ejector and to evaluate the performance of the ejector heat pump system under different working conditions,this study constructed a three-dimensional model of the ejector and a mathematical model of the ejector heat pump system,investigated the influence of geometrical parameters,such as the ejector throat diameter(Dt)and the throat-orifice position(Nozzle Exit Position,NXP),on the performance of the ejector and analyzed the influence of the different working conditions(The effects of different operating conditions(evaporating temperature Te,condensing temperature Tc,and generating temperature Tg)on the system performance and injector characteristics were analyzed.It is found that increasing Dt can significantly improve the pressure rise ratio of the injector,but it will lead to the reduction of the elicitation coefficient,and the pressure rise ratio decreases with the increase of NXP,and the elicitation coefficient reaches the peak value at NXP=7 mm.When Tc is 40℃and Tg is 70℃,the system cooling coefficient(Coefficient of Performance(COP))increases from 0.94 to 2.64 as Te increases from 0℃to 15℃,the pressure rise ratio of the injector decreases from 1.61 to 1.31,and the priming coefficient increases from 0.51 to 0.89.Among them,the optimization of Dt and NXP can significantly improve the pressure-to-lift ratio and the elicitation efficiency,while the reasonable matching of Te,Tg and Tc plays a decisive role in the system performance.关键词
热泵/喷射器/R290/CFD/数值模拟Key words
heat pump/injector/R290/CFD/numerical simulation分类
建筑与水利引用本文复制引用
王衡,冯荣,曹岗林,侯刚,雷荣功,王治国,郎少华..基于CFD的喷射器结构优化及喷射式热泵系统性能研究[J].可再生能源,2025,43(12):1598-1608,11.基金项目
陕西省教育厅产业化培育项目(24JC023) （24JC023）
陕西省自然科学基金项目(2025JC-YBQN-575) （2025JC-YBQN-575）
重庆教委科学技术研究计划项目(KJQN202303805). （KJQN202303805）
